@inproceedings{biblio-7305124863168789292, author = {Pavel Češka and Pavel Pecina}, year = 2007, title = {Charles University at CLEF 2007 Ad-Hoc Track}, booktitle = {Working Notes for the Cross Language Evaluation Forum (CLEF) 2007 Workshop}, publisher = {Magyar Tudományos Akadémia}, address = {Budapest, Hungary}, isbn = {2-912335-31-0}, }